Apparatus for annealing glassware



Dec. 19, 1922.

l. H. FREESE. APPARATUS FOR ANNEALING GLASSWARE.

4 SHEETS-SHEET l.

FILED JAN. I7, 192].

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Decflsa, 1922.

vI. H. FREESE. vAPPARATUS FOR ANNEALING GLAsswARE.

4 s'HEETs--SHEU 2.

FILED 1AN.17,1921.

VIIIIIIIIIIIIIIIIIIII I llll Dec. 19, 1922. 1,439,305. l. H. FREESE.

APPARATUS FOR ANNEALING GLASSWARE.

FILED JAN. l?, 1921. 4 SHEETS-SHEET 3.

Dec. 19, 1922. y

l. H. FREESE.

APPARATUS FOR ANNEALING GLASSWARE.

4 SHEETS-SHEET 4.

FILED JAN. 17, 1921.

Patented Dee. 19, 1922.

UNITEDASTATES 1,439,305 PATENT OFFICE.

IRA H. FREESE, OF CLARKSBURG, WEST VIRGINIA, ASSIGNOR T HAZEL-ATLAS GLASS COMPANY, OF WHEELING, WEST VIRGINIA, A CORPORATION OF WEST VIRGINIA.

APPARATUS FOR ANNEALING GLASSWARE.

Application filed January 17, 1921. Serial No. 437,657.

To all whom t may concern:

Be it known that I, In.)x H. Fnnnsn, a citizen of the United States, residing at Clarksburg, Harrison County, West Virginia, have invented new and useful Improvements in Apparatus for Annealing Glassware, of which the following is a specification, reference being had .to the accompanying drawings, in which- Fig. 1 is an elevation of apparatus embodying my invention; Fig. 1a is a diagram of the electrical generator connections for the apparatus; Fig. 2 is a planof my improved apparatus; Fig. 3 is a section on lines III-III of Fig. 2; Fig. 4 is a plan of one of the containers, partly broken away to show a series resistance; Fig. 5 shows a detail of the receptacles for the individual articles of glassware; and Fig. 6 shows a modified form of wiring for a container.

My invention relates to the annealing of glassware and comprises providing a plurality of containers for the ware, in which the temperature may be carefully regulated. As

'. I prefer to mount the containers on an endless belt and my improved apparatus is of the portable type and can be moved about as desired, this is a great advantage as compared to the ordinary masonry annealing furnace.

My invention also consists in the various features which I shall hereinafter describe and claim.

Referring to the drawings, 2 indicates the frame of the machine, which is supported upon the wheels 3, so that it may be conveniently moved about a factory by any suitable source of power, such, for instance, as the motor G, At each end of the frame 2 is a pair of sprockets 4, upon which is mounted the endless belt 5. The sprockets 4. are driven by the motor 6. Secured to the belt 5 are the containers T, each of which has therein a plurality of receptacles 8 for the individual articles of ware. Attached to the outer ends of the pins 7a,.by which the containers 7 are secured to the belts 5, are the rollers 9, which move along and are supported by the channels 10 secured to the frame 2. n

Each container 7' preferably has a series resistance 1l therein, by which the receptacles 8 depending into each container 7 are heated, the bottoni 12 of each receptacle being perforated, as is shown in Figs. 4 and 5, to permit the easy access of heat into the interior of the receptacle. Electricity is supplied to the resistance through the roller contacts 13, which engage the pairs of bar-s 14, 14h, 14. Each pair of bars 14a, 14", or 14C is separated from the other pairs of bars and 1s connected with its respective generator A, B, or C., which provide successively lessening voltages and accordingly lessening degrees of heat as the containers travel away from the loading point D. Each receptacle is provided with a lid 15, which is opened at the unloading station E and remains openy as the container passes up-side down under the machine by reason of the flat surface 16 at the rear edge of the lid 15, which engages a corresponding flat surface on the container. lVhen the receptacle reaches the loading station D the operator fills the receptacle and closes the lid. and the receptacle then proceeds to the unloadino' station, thus completing the cycle.

n operation the machine is placed conveniently near a forming machine and the operator places the ware. which is still hot from the forming operation, in the recept-acles 8 in the container T at the loading station D indicated at the left-hand side of Fig. 1. The lids 15 are then sluit down and the Vforward movement of the container brings its roller contact 13 into engagement with the bars 111, to which current is supplied by the generator A. I have found that a 500 volt generator supplies a suitable amount of heat. This generates a comparatively high heat in the container, which should be arpproximately that at which the ware was when inserted in a receptacle; to wit, slightly above 900o F. The container moves along with the ware at this comparatively high heat until the end of the bars 14Cd is reached and contactl is made with the bars 14", which are connected with a generator (such as a 220 volt generator). which supplies a lesser degree of heat. Then, if desired, a third series of bars 14, connected with a third generator C producing a lesser degree of heat, may be brought'into use. Obviously, the number of changes in the annealing temperature and the dura-tion of any one temperature will depend on the ware being annealed. When the container arrives at the unloading station E at the right hand of Fig. 1, the receptacles are emptied and are returned by the endless belt beneath the machine to the loading point D.

ln Fig. t5 have shown-ia-'inodiication ot in v invention, in which the series winding ll passes around each receptacle in succession7 thereby effecting" an even distribution ot the heat through the sides of the receptacles.

the. containers preferably are made ot' sheet nieta'lwith a heat resisting sheathing 17, such as asbestos or the likel` and the receptacles within the container must also be iliade soine material not affected by heat.

The terms and expressions which l have employed are used 'as terms ot descriptioi'i and not ot limitation, and l have no intention7 in the use of such terms and expressions. ot' excluding` any equivalents of the features shown and described, or portions thereof, but recognize that various modifications are possible within the scope of the invention claimed.

lWhat l claim is:

l. ln apparatus tor annealing glassware which comprises a plurality of closed vessels, each having a plurality of receptacles therein tor the reception ot articles ot glass ware. a heating' element in each said vessel..l and means for moving` the vessels troni a loading station to an unloading station and nieans for regulating the application of heat therein.

2. ln apparatus tor annealing glassware which comprises a plurality ot closed vessels, each havinga plurality ot receptacles therein tor the reception of articles of glassware,

metisses means tor movingn the vessels in a definite cycle, and a heating eleincnt in each said vessel arranged to generate heat in and about the receptacles therein.

3. ln apparatus for annealingglassware which comprises a plurality ot closed vessels having a plurality otl receptacles therein for the reception ot' articles oil giflassware7 an electric heating element in each vessel, means for supplying' electrical energy to said elements, a closed cycle through which said vessels operatevn and means tor regulating;` the wattage supplied to said elements during different portions ot said cycle.

4. ln apparatus for annealing,` glassware which comprises a plurality of closed vessels having a plurality of receptacles therein for the reception of articles ot glassware` an electric heating element in each vessel7 a series of separated contacts tor supplyingy current to such vessels at successively varying voltages, and means for moving' the vesA Sels successively into engagement with said contacts.

5. .ln apparatus for annealingjr lglassware which comprises a plurality oi vessels nionnted for movementI in a closed cycle.y individual receptacles for glassware in each of said vessels, each receptacle heinz;r separated from the other receptacles in the vessel by a clear air space around the sides and bottoni thereof, and a heating element ineach vessel.

llit ll. FRE ESE. 

